[the only thing you can do is spend plenty off time trying to stop it keep it working at close range when it flushes try to be right nxt to the dog between where the dog and the bird is and if it runs in try and catch the dog at the same time as blowing the stop comand not easy but if you get on top of the dog and it relises why you are telling it off it will soon learn ,not an easy task ,dont make the mistake that most people do and shout at the dog when its come back after its course as it will think you are shouting at it for coming back and will do the opposite to what you want also a r